Envelop.



P. A. HOFFMAN.

ENVELOP.

APPLICATION FILED OCT. 21, ms

1,229,081; Patented June 5, 1917.

WITNESSES l/V VENTOR A YTOH/VEYS PETER ALBERT HOFFMAN, F HASTINGS, MINNESOTA.

nlvvnnor.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed October 21, 1915. Serial No. 57,065.

To all whom it may concern:

Be it known that I, PETER A. HOFFMAN, a citizen of the United States, and a resident of Hastings, in the county of Dakota and State of Minnesota, have invented a new and Improved Envelop, of which the following is a full, clear, and exact description.

This invention relates to improvements in closures, as for instance, envelops, containers and the like, and has for an object the provision of an improved construction which may be used as an envelop for receiving any suitable paper or as a box, en velop or container for the purpose of filing documents of various kinds and also for the purpose of mailing booklets and the like.

Another object of the invention is to provide an improved arrangement of envelop or container wherein the parts are bent in line with the grain of the material of which the envelop or container is made in order to prevent breaking at the bending line.

A still further object in view is to provide a container or envelop formed with a flap and locking means engaging part of the body of the envelop for locking the flap in position.

A still further object in view is to provide a container in which a member is provided which is set in from the ends in order to produce a reinforcing strengtheningstructure at the ends.

In the accompanying drawings Figure 1 is a perspective view of an envelop or container embodying the invention; Fig. 2 is a plan view of the blank from which a part of the envelop is formed;

Fig. 3 is a plan view of the blank used in connection with the blankshown in Fig. 2 for completing the envelop;

Fig. 4 is a fragmentary "sectional view through one end of the container and looking flap.

Referring to the accompanying drawing by numerals, 1 indicates a blank which is adapted to be bent on lines 2, 3, 4, 5 and 6. .The space 7 between lines 4 and 5 is one side of the complete envelop while the space 10 is the other side, and the material between lines 5 and 6 forms the bottom while the material between lines 3 and 4 forms what might be termed the top. The section 12 is bent over as shown in Fig. 1 and is connected with section 13 by one or more eyelets 14 and also by one or more eyelets 15, said eyelets being arranged to hold the locking clips 16 and 17 in position for proper operation. In the drawing, pivotally mounted clips are shown, but it is evident that sliding clips may be used, as shown in my former Patent N 0. 1,125,535 without departing from the spirit of the invention. These clips are provided with turnedover ends 18 and 19 which slidingly fit over the edges of the section 10 when sections 12 and 13 are turned over against the section or side 10, as shown in detail in Fig. 4. In order to provide a structure which may be easily moved in and out, the various clips are provided with a roughened slightly raised portion 8 and a ridge or beaded structure 9.

The blank shown in Fig. 2 when properly folded forms the main part of the container, but in order to provideproperreinforcing and bracing members together with end members, the blank shown in Fig. 3 is utilized. The ends 20 and 21 are set in or set back from the edges of the sides of the body, as clearly shown in Fig.1. In order to form the ends 20 and 21 and associated parts the blank shown in Fig. 3 is adapted to be bent on lines 23, 24:, 25 and 26. The space or section 27 between lines 24: and 25 is secured to the space or section 7 by adhesive or in any other suitable manner and the ends 31 and 32 are secured to the end portion or section 10, as shown more particularly in Fig. 1, whereby the end members 20 and 21 are provided and the corners or joints of the envelop are reinforced. Part of the ends 31 and 32 are left unfastened or loose, as shown in Fig. 1, whereby the resilient end members or clips 16 and 17 may fit over the edges of section 10 so as to hold the flap formed of members 12 and 13 in a closed position.

The envelop may be made of any suitable material, preferably a good quality of paper, as for instance, Manila paper. In forming Manila paper and also other kinds of paper, the construction is such that there is a grain running in a certain direction through the paper and if the paper is bent transversely of the grain the same will break in a short time, while if it is bent longitudinally of the grain it will not break for a long time. The grain of the paper forming the sheet or blank 1 extends parallel with the respective lines of bending or creasing, while the same is true of the member 22 shown in Fig. 3, that is, the grain of the paper is parallel with the lines 23 to 26, inclusive. By arranging the pieces of paper in the manner just described the parts which must necessarily be bent for producing an envelop Will not readily crack or break, and also the envelop will not readily break along any of its creases during the use of the envelop as none of the fabric-of the paper is broken during the bending or creasing of the blanks. What I claim is: 1. In an envelop of the character described, a body formed from two blanks folded and secured together, one of said blanks being folded for providing a bottom, two side members, a top member and an overlapping flap, and the other of said blanks being folded so as to provide a'central body, end flaps and end members for the envelop, the body of said first mentioned blank and the end flaps being secured to the sides of the first mentioned flap in such a manner as to cause the ends provided by the second mentioned blank to be spaced inwardly from the ends of said sides.

2. In an envelop of the character described, a body formed from a single blank I folded so as to produce two sides, a bottom,

Copies of this patent may he obtained for five :cents- :each, by addressing the a top and a flap designed to overlap one 'of said sides, a separate member formed from a single blank folded so as to produce a side member, end members and a pair of flaps extending an appreciable distance'across one of the first mentioned? side members, the side member of said separate member'bemg ranged on the flap of saidbody provided with a projecting member adapted toextend between the unsecured part of the flaps on said separate member and the side adjacent thereto, whereby the flap =on'the body is held in a folded position.

I In testimony whereof I have signed my name to-this specification in the presence of two subscribing witnesses.

PETER ALBERT HOFFMAN, Witnesses i V .A. A. WELSHONS, E. J FAsBENnEn.

:Gonn'nissioner of Patents,

Washington, 13.0. 

